version 1.2, 1999/10/13 13:00:08
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version 1.9, 2007/12/31 19:02:24
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\ bernd thallner 9725890 e881 |
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\ disassembler in forth for alpha |
\ disassembler in forth for alpha |
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\ Copyright (C) 1999,2000,2007 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
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\ Gforth is free software; you can redistribute it and/or |
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\ modify it under the terms of the GNU General Public License |
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\ as published by the Free Software Foundation, either version 3 |
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\ of the License, or (at your option) any later version. |
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\ This program is distributed in the hope that it will be useful, |
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\ but WITHOUT ANY WARRANTY; without even the implied warranty of |
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\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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\ GNU General Public License for more details. |
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\ You should have received a copy of the GNU General Public License |
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\ along with this program. If not, see http://www.gnu.org/licenses/. |
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\ contributed by Bernd Thallner |
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\ util |
\ util |
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: h@ ( addr -- n ) \ 32 bit fetch |
\ require asm.fs |
dup dup aligned = if |
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@ |
\ : h@ ( addr -- n ) \ 32 bit fetch |
$00000000ffffffff and |
\ dup dup aligned = if |
else |
\ @ |
4 - @ |
\ $00000000ffffffff and |
$20 rshift |
\ else |
endif |
\ 4 - @ |
; |
\ $20 rshift |
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\ endif |
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\ ; |
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also assembler |
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vocabulary disassembler |
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get-current |
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also disassembler definitions |
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create string_table |
create string_table |
1000 allot |
1000 allot |
Line 257 create decode_code
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Line 281 create decode_code
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print_string drop |
print_string drop |
; |
; |
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: decode_Bra ( instruction tbentry -- ) |
: decode_Bra ( addr instruction tbentry -- addr ) |
swap |
swap |
dup $03e00000 and 21 rshift decode_register |
dup $03e00000 and 21 rshift decode_register |
$001fffff and . |
$001fffff and 2* 2* 2 pick + 4 + hex. |
print_string |
print_string |
; |
; |
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Line 282 create decode_code
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Line 306 create decode_code
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: decode_Mem ( instruction tbentry -- ) |
: decode_Mem ( instruction tbentry -- ) |
swap |
swap |
dup $03e00000 and 21 rshift decode_register |
dup $03e00000 and 21 rshift decode_register |
dup $0000ffff and . |
dup $0000ffff and dup 15 rshift negate 15 lshift or . |
$001f0000 and 16 rshift decode_register |
$001f0000 and 16 rshift decode_register |
print_string |
print_string |
; |
; |
Line 415 create opcode_table
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Line 439 create opcode_table
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drop \ string_table end |
drop \ string_table end |
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: decode_inst ( n -- ) \ instruction decoder |
set-current |
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: disasm-inst ( addr n -- addr ) \ instruction decoder |
dup $fc000000 and |
dup $fc000000 and |
26 rshift cells |
26 rshift cells |
opcode_table + |
opcode_table + |
Line 424 drop \ string_table end
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Line 450 drop \ string_table end
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$2c emit cr |
$2c emit cr |
; |
; |
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: disasm ( addr n -- ) \ disassembler |
: disasm ( addr u -- ) \ gforth |
cr 0 |
\G disassemble u aus starting at addr |
?do |
cr bounds |
dup h@ |
u+do |
over $28 emit space . $29 emit space |
." ( " i hex. ." ) " |
decode_inst |
i i h@ disasm-inst drop |
4 + |
4 |
loop |
+loop ; |
drop |
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; |
' disasm is discode |
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